Lateral-motion car-truck.



E. c, WASHBURN. LATERAL MOTION UAR TRUCK.-

APPLIOATION FILED AUG. 19, 1908.

Patented Feb.23,19o9.

2 SHEETS-SHEET 1.

SN WMA NN E. WSHBU-RN:

LATERAL MOTION CAR TRUCK.

APPLICATION FILED AUG. 19, 1908.

mente@ Feb. 1909.

2 SHEETS-SHEET 2.l

gnam

l1/r Z22/W (74d),

modified form oi' my invention.

YEDWIN C. WASHBURN, OF MINNEAPOLIS, MINESOTA.

LATERAL-MOTION CAR-TRUCK.

Specification of Letters Patent.

Patented Feb. 23, 1 ece.

Application filed August 19, 1908. Serial No. 449,219.

To all whom tt may concern:

I cal sliding movements.

Through the open Be it known that I, EDWIN C. VvvAsnUnX, lower ends ot the axle box seats of the said a citizen oi' the United Minneapolis, in the county ol' Hennepin and State ol' Minnesota, have invented certain new and usel'ul Improvements in Lateral- Motion Car-Trucks; and I do hereby declare the following to be a full, clear, and.,exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to car trucks and has for its especial object to provide an improved lateral niotionai device therefor.

Y' o the above ends, the invention consists of the novel devices and combinations of devices hereinafter described and deiined-n the claims. f

In the accompanying drawings' which illustrate the invention, like charactersillustrate like parts throughout the several views.

Referring to the drawings: Figure 1 is a view partlyin side elevationanrl partly in vertical section on the line x1 ,x1 of Fig. 2,

Ishowing a car truck embodying my invention. Fig. 2 shows an improved car truck partly in l'i'ont elevation and partly in transverse. section on the line x2 we of Fig. 1; Fig. 3 is .a side elevation showing in detail one ol' the so-called bolster stirrups. Fig'. 4 is a view partly in side elevation and partly in vertical section and with some parts broken away, showing a car truck embodying a Fig. 5 is a transverse vertical section taken approximately on the line x5 ai of F ig. 3 some parts being broken away. Fig. 6 is a fragmentary detail showing a portion of one of the bolster columns sectioned on the line :v6 x6 of fllig. el.

Oi the part-s of the car truck, the numeral 1 indicates the wheels secured to axles 1 a in the usual way, and journaled in axle boxes 3, vthe usual bearing brasses 4: and keys 5 being inserted between the tops ol said axle boxes and the journals of the said axles.

In the construction illustrated in Figs. 1 to 3 inclusive, the trucl: side frames are of cast steel construction being made up ol` top and bottom arch bars, the intermediate portions oi which are cast integral with holster columns 2 and the end portions of which are cast integral with bifurcated axle box receiving. heads 6 inwhich the axle-boxes 3 are mounted ywith freedom for limited verti- States, residing at l head 6, bolts 7 are passed to normally hold the axle boxes against displacement. Immediately over the axle boxes 3, the heads 6 are formed with-inverted cylindrical spring )oclrets 8 in which springs 9 are placed. Fliese springs 9 yieldingly support the truck side frames 1 directly from the tops of the axle boxes 3. The said axle boxes 3 are formed with verticaLi-ibs 10 that engage theY sides of the bifurcated heads 6 and hold the said axleboxes against movements transversely of the'truck side frames. The lower portions of the columns 2 and of the lower arch bar portions of the two truck side frames are rigidly connected by transoms or tied bars 11, preferably formed by a pair of -reversely turned anglev bars the ends of which are riveted to the said truck side frames. The top bar of the truck side frames in that portion which spans the portion between the upper ortions of the bolster columns 2, is foime approximately semi-cylindrical as indicated at 12, is open at its bottom, and is raised so that heavy pivot rods or bolts 1S may be inserted endwise therethrough. It will'be noted thatiet-h -the upper and lower bars of the truck.l side frames are in this case channel shaped,

and that the bifurcated heads 6 are reinforced by laterally spaccd ribs. Working between the truck holsters 2 of each side frame and pivoted at its u per end on the pivot bolt 13, is a se-callec bolster stirrup preferably made rectangular in contour. These stil-rups which are indicated as entireties by the numeral 14, are provided with 4transverse upper portions preferably made y semi-cylindrical as indicated approximate u at 15, and the bolts 13 are passed directly through the said portions 15. The transverse lower or base portions ofthe stirrups 14 are expanded or widened out to afford suitable s ring bases 16, upon each of which, four olster supporting springs 17 1 are rested at their lower ends. The truck bolster 1-7 which as illustrated-is of hollow cast steel construction, is 'atits central portion, provided with the usual or any suitable arrangement for pivotal connection by means of center bearing, to the car bolster as shown. The ends oi' the said .bolster are passed through the stirrups 14 and are seated aereto.

Aonpthe upper ends of the two groups of springs 17a. Preferably the spring bases 16 and the ends of the bolster 17 are formed 'with' bosses Which hold the endsof the said s ring 17a in ro er osition in respect P The trlickp boldler 17, on top and -n `aruits ends, is provided with stop lugs 18 ada ted to engage the portions 12 ,of the truc side frame to limitl the endwise move.- ment of the bolster transversely ofthe truck. The stirru ps 14 are provided with depending sto lugs or flanges 19 that are engageable Wit stop flanges 20 on the bottom bar of the side frames, to directlyv limit the outward oscillatory movements of the stirrup on the pivot bolts 13.

With the construction described, it is i .evident that the truck holsters of two car trucks supported' as above described, will be free for movements transversely with the truck so as to thereby permit lateral move-v extremely resilient sulpport for the car ody,

, and hence, is especia -1n passenger coaches. ,Also, with the con 4well adapted for use struction above described, it is a very easy matter to remove the truck bolster from the car truck and at the same time there is no danger of accidental disconnection thereof from the trucks.

With the construction described, there 1s ,very little dangenof breaking either stirrup or its supporting pivot bolt 13, but in case of lsuch accident, the lower the broken stirrup will sim ly fa upon the underlying position of the ower arch lbar of the side frame and would be held in operative position so that the truck. would not be entirely disabled.

Referring next to'the construction illustrated in Figs. 4,. 5V and 6, it will be noted' that the truck side 'frames are made up of customary arch bars 21 and 22 and 'the bottom bar 23; that the axle boxes 3 are rigidly clamped to the ends of said bars-by the customary nutted bolts 24; and that the bolster columns 25 are secured by column bolts 26 between ythe intermediate ortions of the said bars 'approximately in t e usual Way. Angle iro'n transoms 27 rigidly con- .nect the lower portions of the bolster column 25l and arch bars'22 vof the laterally spaced sideA lframes. In this construction, the

' bolster stirrups 28, which are otherwise substantially the same-as the stirrup la, are in this instance, formed at the endsofthe v truck.

ortions of erases transverse upper portions withv integrally c ast trunnions 29 that engage seat 30 formed in the upper ends of thel bolster columns 25.

What I claim is:

l. In a car truck the combination `with 7 endless stirrups pivotally connected to the side frames thereof, of a truck bolster supported` by said stirrups for endwise movements transversely ofthe truck.

2. In a car truck the combination with i endless stirrups pivotally connected thereto at their upper ends, of a truck bolster and springs interposed between/ said truck bolster and said stirrup nwhereby said truck bolster is yieldingly supported with-freedom for l limited endwise movements transversely of the truck.

8. In a cartruckthe combination'with ap-l proximately rectangular endless stirrups pivo'tally connected at their upper ends to the side-frames thereof, springs seated on the lower portions of said stirrups, and a truck bolster the ends-of which project through said. stirru and are seated on said springs, the said bo ster being yieldingly-mounted for endwise movements transversely with theA 4; In a car truck the combination with endless stirrups pivotally connected at their upper ends to the side frames thereof, and a truck bolster supported by said stirrups` for limited endwise -movements transversely of the truck, the said bolsterhaving stops en gageable with said side frames to limit the endwise movements thereof.

5. Ina car truck, an endless stirrup pivoted thereto, s rings supported bysaidstirrup, and a bo ster projecting through said stirrup and supportedby said springs.

6. In a car truck, endless stirru s seated therein and pivotally connected tliereto at their upper ends, springs carried by said stirrup, and a bolster projecting through said stirrups and supportedby said springs.

7. In a c'ar truck, the combinationwith endless approximately rectangular stirrups seated in approximately rectan ular openings in said side frame and pivota y connect'- ed thereto at their upper ends, springs carried by said. stirrups,- and a bolster projecting through said4 stirrups and'carried on said springs'.

8. In a car truck approximately rectangular endless stirrups having expanded bases in their lower portions and pivotallyconnected at their upper portions to the truck side frame, groups of springs seated on the bases of said stirrups, and a truck bolster the ends of which are extended through said stirrups and are seatedon said springs.

9. In a car truck the combination with cast side frames having approximately semicylindrical raised intermediate up er bal ortions,`of approximately rectangu ar endess stirrups Working in approximately rectangular openings inssaid side frame, bolts pivotally connecting tlierupperk.portions of said stirru s to the raised semi-eylindrieal ortions o said side frame, springs carried liy said stirrups; and a holster the ends of which Work through said stirrups and rest on said springs.-

10. A ear truck having east side frames forrned with inverted channel shaped por-1 tions spanning the openings between col l uinns, and bolster supporting stirrups having their upper portions located within and .pivots-illy'eonneeted to said inverted eliannels.

11. In a ear truck, the combination with east side frames having inverted channel shaped portions spanning` the openings between Columns, pivot shafts extended longitudinally through said el'iannel shaped portions, and bolster supporting stirrups pivoted onsaid shafts.

12. In a ear truck, the Combination with east side frames having inverted channel shaped portions spanning the openings between lcolumns; ivot shafts extended longitudinally throng the channel shaped portions, and endless bolster supporting,` stirr'ups having their upper portions pivoted on said shafts and covered by said channel shaped portions.

l?. In a oar truck, the Combination with rast side frames having raised inverted chene nel shaped portions spanning the openings between bolster columns, of pivot shafts exchannel endwise stirrups tended longitudinally through said shaped portions and removable therefrom, and bolster supporting pivoted on said shafts. i

14. In a oar truck, the Combination with east side frames having raised channel shaped port-ions spanning the o enings between lbolster columns, ivot shafts extended longitudinally throng; said channel shaped portions EDWIN C. WASIIBU 1N. Witnesses:

A. J. SWANSON, H. D. KJLGORE. 

